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Nix4Pres Nix4Pres
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8 years ago
When cells become hypoxic and the amount of carbon dioxide in them increases, reducing tissue pH, which of the following occurs to restore homeostasis?
A) Mast cells release histamine, resulting in dilation of capillary sphincters and an increase in tissue perfusion.
B) The precapillary sphincters open, increasing blood flow to the tissues. The postcapillary sphincters remain closed so that increased hydrostatic pressure forces lactic acid into the interstitial fluid, where it is buffered.
C) The sympathetic nervous systems constricts the capillary sphincters to prevent washout of the accumulated lactic acid.
D) Mast cells release serotonin, resulting in dilation of the capillary sphincters and an increase in tissue perfusion.
Textbook 
Essentials of Paramedic Care Update

Essentials of Paramedic Care Update


Edition: 2nd
Authors:
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feijoafeijoa
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Nix4Pres Author
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#2
8 years ago
Thanks so much!
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#3
8 years ago
Good luck on exams!
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